This smells like fake science to me. I believe that Neanderthals are humans and humans are Neanderthals. My guess is that the Neanderthal term was created by “fake scientists” to try to bridge the gap between apes and humans. At the most, Neanderthals were probably just another human race like whites, blacks, hispanics, asians, etc. But then again, I believe the Bible and that God created Adam and Eve. So, that just makes me an another ignoramus doofus to fake scientists.
Science frowned on any connection between Neanderthal and so called modern humans. When the DNA evidence came out they were gobsmacked especially since there was no Neanderthal DNA in sub Saharan Africa. This means Europeans, Asians and Pacific Islanders HAVE those genes. Africans do not. Not politically correct.
As far as the Bible? Couldn’t tell you. My church (Catholic) currently separates science from religion.